Sole.



' shoe, or because it has been impossi JOHN G. ETTL'E AND JESSE B.SWEASY, OF RED WING, MINNESOTA.

SOLE,

Specification of Letters I-atent. Patented Dec. 31, 1918.

Application filed November 10, 1917. Serial No. 201,197.

To all whom it may concern:

Be it known that we, JOHN G. Em and Jnssn R. SWEASY, citizens of theUnited States, residing at Red Wing, in the county of Goodhue and Stateof Minnesota, have invented a certain new and useful Improvement inSoles, of which the following is a full, clear, concise, and exactdescription, reference being had to the accompanying. drawings, forminga part of this specification.

This invention relates to soles for shoes, and is especially concernedwith the construction of full length outer soles. It has heretofore beenproposed to construct full length soles of two pieces of leather, theone piece of leather comprising the tread and shank ortions of the soleand being made of hig ade leather, and the other portion thereoconstituting the heel seat and being made of a poorer grade of leather.This method of forming a sole has been employed for the purpose ofreducing the quantity of high grade leather necessary for forming asole, it being unnecessary to form the heel seat from high grade leatherfor the reason that it is protected from wear by the heel which istacked or otherwise secured thereto. Various means have been employedfor joining the abutting edges of the two pieces, but, so far as We areaware, these means have not proved to be. satisfactory, either becausethe joints produced between the two members were too Weak to withstandthe strains imposed thereon during the manufacture of the completed leto obtain a joint of the same thickness as the remaining portions of thesole.

The ob ects of our invention are, therefore, t produce a complete outersole comprising two or more pieces joined in such a manner that thejoints will be of the same thickness as the remaining portions of thesole and of such strength as to remain intact during the manufacturingoperations. A further object is to produce a sole having a joint of thischaracter which can be made with a minimum amount of expense.

Further objects will appear as the description progresses,reference'being had to the accompanying drawings in which,

Figure 1 is a plan view of solo;

our improved Similar characters of reference refer to similar partsthroughout theseveral views.

Referring to the drawing, our improved sole comprises the portion 1which includes the tread and shank portions of the sole and is made ofhigh grade leather and the portion or member 2 which forms the heel seatand is made of a poorer grade of leather. The adjacent edges of thesetwo portions are beveled, as indicated at 3, to form a beveled lappedjoint and are provided with interlocking ribs and grooves 4 and 5respectively which extend substantially transversely of the two membersand are of such dimensions that when brought together, as shown in Fig.3, the joint has the same thickness as the portions 1 and 2. Preferablybefore the two members are brought together We coat the overlappingedges with a suitable cement. After the overlapping edges are broughttogether we Secure the ribs and grooves in interlocked relation by meansof several tacks 6. It is possible, however, to dispense with thesetacks and depend merely upon the cement for holding the overlappingedges together.

While we have have described the pretoward each other, and means forholding the said grooves and ribs in interlocking position.

2. A composite sole including a heel portion and a shank portion havingsubstantially transverse overlapping edges provided with interlockingribs and grooves, the sides of said ribs and said grooves being inclinedtoward each other. i

3. A composite sole including a heel portion and a shank portion-havingsubstantially transverse overlapping edges provided with interlockingribs and grooves.-

In witness whereof, we hereunto subscribe our7names this 5th day ofNovember, A. D. 15 191 Witnesses:

FRED W. PUTNAM, ANNA M. LARSON.

